Index: binaries/data/mods/public/simulation/templates/structures/cart/apartment.xml
===================================================================
--- binaries/data/mods/public/simulation/templates/structures/cart/apartment.xml
+++ binaries/data/mods/public/simulation/templates/structures/cart/apartment.xml
@@ -6,7 +6,7 @@
   <Cost>
     <BuildTime op="mul">1.5</BuildTime>
     <Resources>
-      <wood op="add">50</wood>
+      <wood op="add">25</wood>
       <stone op="add">50</stone>
     </Resources>
   </Cost>
Index: binaries/data/mods/public/simulation/templates/structures/cart/house.xml
===================================================================
--- binaries/data/mods/public/simulation/templates/structures/cart/house.xml
+++ binaries/data/mods/public/simulation/templates/structures/cart/house.xml
@@ -10,6 +10,21 @@
   <Obstruction>
     <Static width="13.0" depth="13.0"/>
   </Obstruction>
+  <Upgrade>
+    <Apartent>
+      <Entity>structures/cart/apartment</Entity>
+      <Tooltip>Add a Second Story to make an Apartment.</Tooltip>
+      <Cost>
+        <wood>50</wood>
+        <stone>50</stone>
+      </Cost>
+      <Variant>upgrading</Variant>
+      <Time>30</Time>
+      <Requirements>
+        <Techs datatype="tokens">phase_town</Techs>
+      </Requirements>
+    </Apartment>
+  </Upgrade>
   <VisualActor>
     <FoundationActor>structures/carthaginians/fndn_house.xml</FoundationActor>
     <Actor>structures/carthaginians/house.xml</Actor>